fix: Remove redundant emits for dataChanged

Author: alexjba

src/app/modules/main/wallet_section/all_tokens/flat_tokens_model.nim

@@ -146,11 +146,6 @@ QtObject:
     if self.delegate.getFlatTokensList().len > 0:
       for marketDetails in self.tokenMarketDetails:
         marketDetails.update()
-      let index = self.createIndex(0, 0, nil)
-      let lastindex = self.createIndex(self.delegate.getFlatTokensList().len-1, 0, nil)
-      defer: index.delete
-      defer: lastindex.delete
-      self.dataChanged(index, lastindex, @[ModelRole.MarketDetailsLoading.int])
 
   proc tokensMarketValuesUpdated*(self: FlatTokensModel) =
     self.marketDetailsDataChanged()

src/app/modules/main/wallet_section/all_tokens/token_by_symbol_model.nim

@@ -151,13 +151,8 @@ QtObject:
 
   proc tokensMarketValuesAboutToUpdate*(self: TokensBySymbolModel) =
     if self.delegate.getTokenBySymbolList().len > 0:
-      let index = self.createIndex(0, 0, nil)
-      let lastindex = self.createIndex(self.delegate.getTokenBySymbolList().len-1, 0, nil)
-      defer: index.delete
-      defer: lastindex.delete
       for marketDetails in self.tokenMarketDetails:
         marketDetails.update()
-      self.dataChanged(index, lastindex, @[ModelRole.MarketDetails.int, ModelRole.MarketDetailsLoading.int])
 
   proc tokensDetailsAboutToUpdate*(self: TokensBySymbolModel) =
     if self.delegate.getTokenBySymbolList().len > 0: